Preparation of a novel, efficient, and recyclable magnetic catalyst, γ -Fe 2 O 3 @HAp-Ag nanoparticles, and a solvent- and halogen-free protocol for the synthesis of coumarin derivatives

Fe3O4@APTES@isatin-SO3H as heterogeneous and efficient catalyst for the synthesis of quinoxaline derivatives

“…Recently, the chemists have greatly focused on developing the eco-friendly catalysts and methods in the synthetic organic material and industrial fields [1,2].Over the last few decades, a growing research interest has been directed towards the preparation and application of highly efficient and recyclable catalysts in the modern synthetic processes [3][4][5][6].Magnetic Fe 3 O 4 nanoparticles have emerged as privileged support for immobilization of various functional groups such as phosphorous, nitrogen and organic moieties owing to the presence of high density hydroxyl groups on their surface, high surface area, high stability, facile magnetic separation, environmental benignity and high loading capacity [7][8][9][10][11][12][13][14][15][16][17][18]. Among the heterocyclic compounds, quinoxaline and derivatives are the most important compounds due to their biological and pharmacological properties which perform antifungal [19], insecticide [20], antibacterial [21], anticancer, antimalarial, anti-HIV [22] and antibiotics [23] activities.…”

Zinc(II)‐poly(urea‐formaldehyde) supported on magnetic nanoparticles: A hybrid nanocatalyst for green synthesis of spiropyrans, spiroxanthenes, and spiropyrimidines

“…[ 10 ] In addition, they can be used as catalysts in chemical processes. [ 11–21 ] As a result, ferrite spheres with hollow structures have many practical applications in the fields of catalysis, adsorbents, and gas sensors and attract much attention from researchers. [ 6 ] Cobalt ferrite can be used as magnetic support due to its moderate saturation magnetization, low cost, high chemical stability, and mechanical strength.…”

Pd(0)‐ S‐propyl‐2‐aminobenzothioate immobilized onto functionalized magnetic nanoporous MCM‐41 as efficient and recyclable nanocatalyst for the Suzuki, Stille and Heck cross coupling reactions

“…Because this type of supports can be used as efficiently bridge and fill the gap between homogeneous and heterogeneous catalysts . More recently, the consolidation of functionalized mesoporous silica materials with magnetic nanoparticles (MNPs), within a single material to develop novel porous magnetic nanostructure which have the advantages and properties of both mesoporous Silica (thermal and mechanical stability, large pore Volume and high surface area for catalyst loading) and magnetic nanoparticles (simple in synthesis, fast separation, low cost, high surface area and low toxicity), is undoubtedly of great interest for practical applications such as catalytic applications, magnetic storage and recording, for sensors, environmental, and biomedical applications . Therefore owing to the context of reuse of palladium, Herein we report synthesis and spectroscopic characterization of a Pd‐SPATB complex supported on functionalized magnetic nanostructured MCM‐41 (Fe 3 O 4 @MCM‐41@Pd‐SPATB), which has been applied as a novel and efficient nano‐organometallic catalyst with excellent catalytic activity and selectivity in Carbon–carbon coupling reactions in PEG‐400 as green solvent.…”